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Re: Aquatic Plants Digest V3 #372


> Date: Wed, 8 Jul 1998 15:19:45 -0600 (MDT)
> From: George Booth <booth at lvld_hp.com>
> Subject: Re: Salt
> > Date: Wed, 8 Jul 1998 07:50:58 -0500
> > From: "Kudzu" <Kudzu at airnet_net>
> > 
> > I am trying to keep some particularly delicate native fish. I have
> > found that I need to add a bit of salt to the water to help with some
> > problems. If I remember right I read that most plants can't tolerate
> > salt even in low concentrations?
> How about another approach to the problem. What is it about adding salt that is 
> beneficial to the fish?  It simply becomes sodium and cloride ions in the water. 
> If sodium is the key, perhaps another sodium compound would do the trick without 
> hurting plants. Is it chloride?  Or is it just an increase in Total Dissolved 
> Solids?  Perhaps increasing the Ca/Mg hardness would help. Or do the Na or Cl 
> ions combine with something else for a beneficial effect?  If we understood the 
> "cure", perhaps we could think of a more plant-friendly alternative. 
> On the opposite side of the thought, what is it about salt that is bad for 
> plants?  I would guess it's not the sodium. If so, the addition of sodium 
> bicarbonate for buffering would have fallen from favor a long time ago. So how 
> do the Cl ions hurt plants? 


	I'll tke a shot at this. Is it possible that the salt prevents
water uptake in the plant cells? In the same way that dringing ocean water
doesn't do anything for thirst because it can't be abssorbed by an
individuals cells?

			Gerry Skau

			This Wallpaper Is Killing Me. 
                        One Of Us Will Have To Go.

			Oscar Wilde on His Death Bed.